Magnetic flowmeter electrode

Details Magnetic flowmeter electrode Magnetic flowmeter electrode

1991-09-25

1993-09-28

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring electrical or magnetic properties

7386111, G01F 158

Patent

active

052478378

ABSTRACT:
The flow tube of a ceramic material used for a magnetic flowmeter is formed with electrodes that are positioned in the wall of the tube and form a fluid tight fitting. The electrodes have a center plug made of a ceramic material with a metallization layer between the plug and the surface of the opening in the flow tube. The inner ends of the plugs are covered with a conductive ceramic electrode layer that electrically joins the metallization on the plugs to couple the EMF generated by the flowing fluid to the exterior of the flow tube. The conductive ceramic layer is engaged by the fluid in the flowmeter to protect the metallization from erosion. The electrodes are connected to suitable circuitry on their exterior ends.

REFERENCES:
patent: 4741215 (1988-05-01), Bohn et al.
patent: 4782709 (1988-11-01), Goto et al.
patent: 4912838 (1990-04-01), Goto et al.

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